Which of these circuits is NOT part of a vehicle engine’s electrical system?
Mechanics (different vehicle systems)
Explanation
The **sensor circuit** is not part of a vehicle's engine electrical system. The vehicle's electrical systems include the **lighting circuit** and the **charging circuit**, among others.
- The **lighting circuit** is responsible for turning on the vehicle's lights. It is essential for visibility and safety on the road.
- The **charging circuit** is responsible for supplying electrical current to the battery and other systems while the engine is running. The **alternator**, which is driven by a belt, is the key component that generates electricity and stores it in the battery.
Therefore, the sensor circuit is not mentioned as part of the engine's electrical system, unlike the lighting and charging circuits.
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